Dumb-waiter and dumb-waiter inclosure unit



July 19, 1932. J. HIRSHFELD DUMB WAITER AND DUMB WAITER INCLOSURE UNIT Filed March 20, 1928 3 Sheets-Sheet 1 July 19, 1932. J, HlRsHFELD 1,867,568

DUMB WAITER AND DUMB WAITER INCLOSURE UNIT Filed March 20, 1928 s Sheets-Sheet 2 W!W lluummm HHIIWHHHHHEEH" avwe/ntoz y 1932- J. HIRSHFELD 1,867,568

DUMB WAITER AND DUMB WAITER INCLOSURE UNIT Filed March 20, 1928 s sheets-sheet 5 rm $513M Elf/tom Patented July 19, 1932 UNITEDTSTATES V 'dESTAVAiLABLECOF E T F JEROME HIRSHFELD, on NEW YORK, Ni Y., AssIGno R to TELEVA'rbItCOB-PORAMON, on 1 NEW YORK, 1v. Y., A CORPORATION OF NEW YORK. v V

DUMIB-WAITEE Ann DUMB-WAITER rncrosunn n vrr Application filed March 20, 1928. Serial No. 263,158;

My present invention relates generally to a dumb-waiter'shaft or well defining structure adaptable for installation in a building as a single independent unit and coordinately relates to a unit or assembly comprising a dumb-waiter well or shaft defining structure and a dumb-waiter containedand supported therein in operative association therewith, for transportation, installation and removal asaunit. Where it is desired to construct or install an enclosed dumb-waiterparticularly in an already completed building, a great deal of construction work is generally involved, necessitating the employment of special labor, the selection of parts and materials for theconstruction of theshaft in :which' the dumb-waiter isto be received, the assembly of parts to form the dumbwaiter and its non operating mechanism, and the installation thereof in the well so provided. Furthermore, where such a construction is installed, it becomes in fact a fixed part of the building with which it is associated so that neither .1 the dimensions of the dumb-waiter sh'aftnor its position can be changed or varied without requiring demolition and construction Work in connection with the building, knocking down of the dumb-waiter and reassembling of the parts.

' It is an object of my invention to provide a dumb-waiter inclosing shaft defining con struction which can be transported .and installed in a building as a unit separate and apart from the building, and which when installed can function in connection with the building as if it were originally installed therein'as a structural part thereof, but which nevertheless readily permits of its being shifted from one part of the building to another or of its complete removal as aunit" and without requiring any demolitlon of said unit or of any part of'the building.

Another object of my present invention is the provision of a portable inclosure to'se'rve for defining a shaft or well for receivinga dumb-waiter and which shaft or well can be transported as a unit for purposes of installation 1n a building, and which inclosure can be so dimensioned for purpose of transportation and preliminary installation as to be receivable between a floor and the ceiling immediately above, and which when so received on the-floor can then be extended upwardly through an opening in the ceiling so ast'o provide a well or shaft reaching from one floor to a floor or floors there above.

. Another object'of'my invention is a pro vision of an assembly independent of a building which comprises a wellor shaft inclosure for a dumb-waitergof a dumb w'aiter so associated therewithas to form therewith-asingle unit for purposeof transportation, installationand-use' Another object of my invention is the provision'of a portable assemblyiinit comprising. a; dumb-waiter sh aft defining inclosure and a dumb-waiter received-therein and support .ed' therefrom .for.dumbewaiterdoperation,

wherein the dumb waiter shaft inclosure can be lengthened or shortened without disassociating or aifectingthe relationship of the dumb-waiter shaft'inclosure and the dumbwaiter which'it receives within it it supports for operation.

Another ob ect of my invention isthe provision of a dumbwaiter and a dumb-waiter" shaft forming unit assembly in which the shaft inclosure for the dumb-waiter may be so dimensioned for purpose of transportation as to be receivable between the floorand ceiland which ing'of one 'story'of a building and when so received can be extended so'as to permit the shaft inclosure to extendthrough anopening in the ceiling to another floor without affecting the operative associations of the dumbwaiter, with reference to the inclosurewithin which it is received andfromwhich'it islsup ported. I "Another object of my invention is the pro vision of an assembly independent of a build ing of a Well or shaft forming'structure serving as a dumb-waiter inclosure, a dumbwaiterreceived therein for operative support thereby and an operating mechanismj'also received therein for dumb-waiter operation, all. as one unit'fo'r transportation and installa- 'tion and dumb-waiter operation purposes.

eEsT va-masses 4 it 'ing structure as made, up of aplurality of l will premise that I have illustrated in the "teles'copin-gsections so as to permit collapsing held extended. 7

of telescopic sections. For purpose ottransportation and convenience in handling, the

sections are held collapsed, and for purpose of dumb-Waiter Operation the sections are It is one of the objects of my invention to provide as part ofthe extensible and collapsible We ll defining unit; mechanism whereby the sections can be colla psed and't'ele'scoped at Will. a

It is the general object of my present invention to provide as a unit assembledindependently of and for installation in a building'as a unit,.aFdumb-waiter or conveyor and an inclo'surethereforso that the lnst'allatlon of the dumbTWaiter" or conveyor requires nothing moretha-n the transportation of the unitto its position in the'building and the l location and the fixing of this unit in such' a position; I y 4 I lVhile referencefis frequently madeto'the fact that my invention is'partic'ularly useful.

.injconnfection: With buildings already rcompleted, ittWill be understood; of course,-that embodiment of &

it Willv serve useful functions in connection with buildingin process of, constructiom'and that in the latter event'm'y unit assembly'on one hand Will give; theapp'earance of belng a part of the building constructionf and "on the other hand will be shiftable therein and removable :therein asf aunit Without any way. .eii'ecting 'or impairin'g or requiring any ehangein the buildingconstruction. V: 1 I

"For the attainment 'of 'these objectsand .suchiotheriobjects as mayhereiiiafter appear and be pointed out, I l'ha'te illustrated one -Figure 1 is an elevational view of an emf bodi'men't of my invention showing an inclosure for a dumb waiter in operative posit1on-1nabuild1ng;5-

. Figure 2 isa perspective vvieW of flthe in' transportable' telescope'd position i Figure 3 1s a plan view 'shoWmg. th-edumb "Waiter operating apparatus; Y

-. Figure 4 is a vertical view'of the shaft or inclosureoffFigur'e 1 \Vlth'ltS" front partly broken aWay'to show the manner in which the dumb-Waiter is supported therein. 7

i Fig.6 is as ctional elevation on line 5.'5',

Fig.8 isan;enlargedjsection on line 8'8,{

'YjFig'. 9 isapers-pective view illustrating-a handleiforoperatingthe mechanism for raise' i as ingand'lowering thesections of the dumb;

Waiter casing. v

I Before describe my. invention {detail} drawings a unit Which comprises a casingfor ,Well to inclos'e a dumb-Walter and which smade up oftelescopmg sections so that it can be collapsed for purpose of trans- Waiter shaft'inclosur'e of dumb-Waiter parts associatecltherewith in operable; relation;

'(4) motor-mechanism for dumb-Waiter parts. 7 i

In Figure 2' of the drawings, I have illusoperating the trated a shaft or inclosure ton 'l du'mb'fwaitel' 1n=;collapsed transportable cond1t1on, and- In Figure 1 havezillustrated my i'nclosure ing stalledin a building and-extended so as} to t for-m shaftreaching from one floor to another. In the illustrated embodiment the inclosure comprises telescoping parts or sections ,for 7 use in connection ,-vvithdumb+ waiter for 'I'filSlDQiilIl Cl lowering art cles from one floor to another in a building,"although, as will be understood, "the invention is not limitedto the; number of-sections which may be employed orto the number-of floors in the building in' which the dumbwvaitermay be 4 designed to'serve; For the p'urposesofzillus 10 and walls 1 1 and-:12 which are; the. front 14! which are thefside Walls;

r l ionithe outer section of the do n1b W1itQD casing may-be construoted'to include ;.a has'e a= topor cover l 5, frontjand rear walls l6-and 17 'a-nd side' walls 18jandll9; 'These parts of 'the 'casing are; prefenahly' made of suitable metal although, as willbe understood; they maybe made of anyidesi'rfable material; The

although as Will be understood the, inven vsectionsiofthedumb waiter casingare-pref rably'rectangular and square in cross-section? section I preferto employ angles 20 and simi--- larly on the outer side of the uprightv corners oftheinner section to employ "anglesQ-l.

'Ifhese parts are so constructed that the-inner,"

section-ifs adaptedtorlit With n the'outersec-fl V t onia'nd tobe m'ovcd to and from position for 7 use With the angles 20 acting as guides for the.

as the cross-sectionofthefinner orupp' r sec "the dumbavaiter casing-{It will e understoodthat thelt-zngththatis, the height, 1

offthe oute'r'sejctionof the dumbswaiter casing? issubstanti'a'lly thatof theceiling in the room; or--placein the building Where the dumb-i Waiter is; to be installed although it may be appreciably less thanthe height of this ceiling so that with the sections of the dumbwaiter apparatus 'in their nested positions theymay be readily placed in position in the building and the inner section raised so as to pass through the opening in the floor where by this inner section extends to the floor above makingit possible-to use the dumbwaiterfor itsintended purposes. y

In order to permit the shaft or well form; ing structure of Figures 1 and 2 to perform its functions in connection with the dumbwaiter parts contained therein as a will be more fully set forth later on; each of the sections is providedwith an opening for access to the. dumb-waiter. These openings are closed by the door-s68 and 69 shown in the drawings as mounted tov swinging horizontally. The doors (i8 and 69 are positioned such a distance above the floors 22- and 23 as to permit convenient access thereto by; a person standing onthese floors. V

The portabledumb-waiter shaft of Figures 1 and 2 has associated therewith as 'a unitary part of the shaft assembly, suitable apparatus for conveniently raising and lowering the nested upper section of the casing andfor maintaining this section in raised position; and I have found that'the location.

ofithis apparatus in the space between the bottom of the door 69 and the bottom of-the' lower fioor section of the casing serves advantageously from a number of standpoints.

Tothis end the lower section of the'casing is fitted. with a shaft 25 on,which there is mounted a drum 26. This drum 26 atone end thereof is fitted with a socket 27 forming part of a friction bralte 28 which includes studs 29 co-operating with the socket27 in such a manner as to normally maintainrthe shaft 25 against revoluble movement; brake device 28 maybe mounted on'a bracket 30 connected to a channel or othersupport 31 extending across the base of the outer section of the casing. This raising and lowering mechanism also includes suitable cables 32 and 33.. At corresponding ends these cables are wound on the drum 26. Thecable 32 passes over a pulley 3 1 and also over a pulley 85, these-pulleys being suitably mounted on the cross-channel 31-01 otherwise. Thecable then extends upwardly between the Walls 13 and 18 and over a pulley 36 suitably mount- 7 ed on the inner face ofthe wall 13. The opposite end of this cable 32 is then connected to a studB'Z fixed in thelower outer portion of the wall 18 of the inner section of the easing. i

In the same manner the cable 33 passes: over pulleys 38 and 39 suitably mounted in the cross-channel 31 and thenpasses between the walls 14 and 119 over a pulley 40 mounted on the wall 14, the opposite end of. this cablebeing connected to a stud 41 which The V is fixed in the lower outer portion of the wall 19 of the inner section ot the casing;

preferablyl employ a. pinion 42.. Inorderto turn the shaft 25 the apparatus mayinclude i a suitable handle 43 adapted at one end to. fit over the protrudingend of the shaft 25 and fitted with. a pawl or dog i l for engage-5 ment with the teeth of the pinion 42 whereby,

as'will now be understood; the shaft 25; may" Ont-he shaft? 25' exteriorly of the casing I be turned in 'one direction to -raise the inner section of thecasing from its nested ontele scoped position within theqiouter section of the casing to its'position foruse, that is,the; inner section maybe moved from the position in which: it is illustrated in Figg2tothat in I which it is illustrated in Figs. 1, and4. The;

brake isso constructed as'toinelude an'expansion ring locking device? by which when raised the mner sect on of the cas ng maybe retained in position; ITh1S"l ()Ck 1ng dQY1QB per se, however, forms no part of my inven-.-. I

tion. Obviously also, by releasing the brake the shaftispermittedto turn in theoppo'site casing may be thus lowered to its-nested po-, V

direction the inner or -upper section of the sition within the outer section of the casin In order to relievethe bra ke device28 from. supporting the inner-section';when extended 1 for use theside walls of the outer section may be providedwith a series;.ofslots 4l5,.46 and 47 placed, adjacent; the upper end thereof; and adapted to. receive support bars. :Iti"

will be apparent that a set ofsupportbars may be employed. with either. set of slots;'de-.

pending upon the extent; to i which the inner.

section of the casing is raised and thatjvhen i in use the lower end "ofthe inner section rests upon these supportbarsand is thereby maintained in place when the ;dumb-waiter is; F

installed,

From the be understood thatmyinyentionconteniplates a unit assembled indepcndentlyof a buildingm' of parts which when; innested relation, permits the unit to be transported from place to place as a unitand which when extendedper-y mits the asslemblyto extend frofilgo floor to a another ,to serve to enclose the orlwell for a dumb-waiter and which iaS emb-ly' in eludes openingsnecessaryin connection with waiter parts and their relationship to the rest of the'poiftable assemblyi l The dumb-waiter .parts i which may be of any desired typeandin suitable positions "in the side walls thereof the I car is provided with lugs and 51." Passing rend of the inner section of the casing. 10

ropes 52 and'53. I

The car 49 lS I'LlSQd and loweredby means of a cable, a counter weight, and means for acumen the same. The cableisindifizated at '56. t one end this cable is secured in an j fected by anyfsuitablefmeans.' The pulley;

' 1 58 is'inounted on a shaft 59 journaledin suitable bearings andconnected to a set of reduction gearsco; These reduction gears 60 are eye 57 fixed to the upper or'top' part of the car The cable passes over'a pulley 58 and atits opposite end is Connected to a' counter-weight 58', the travel of which may be diconnected to a shaft 61' on which there isa brake device 52, the shaft *61' being driven r from a'motor 63 by'a suitable belt 64' or otherwise; The. parts,' as will be understood, that is, the pulley," the reduction gears, 'th e motor and theparts; connecting the same, are suit-j ablymounted jat the upper' end ofthe inner ,7 sectiono'f' the casing. M I r The motor maybe operated from a suitable control panel65 by theoperation of push but- I tons66 andf67 or otherwise} The push but 1 tenses-are located adjacent the door 68 in the l front'wall of the inner casing while the push but-tan ents similarly located relatively to the door 69in the outer or lower section of V the casing 1 The arrangement may be such that the car carries'a trip 70cfor operatin'g a; 7 look by nieansof which'the doors ,68 and 69: are closed andxlo cked and cannot be opened except-men the car is in, position at thedooil These device s, however, for "operating the car and locking the doors are old in the art andcon sequently per se forin no part of my ,presentinvention'.

As shown Figs. 1' and l of the drawings j the top of the inner section of the casing may beprovided with one or more lugs 71 by ineans of which ithe partswheninposition may be secured in place by being connected to "a wjall. iv

'- I Fromthe foregoing description itlwill now" be understood that the dumb-waiter unit in accordance with my invention is con- Vstructed as'a self-containedapparatus which,

; 1 may beset up for use in substantially any place in any building eitherby providing an aperture in "the floor and ceiling therefor in 1 constructing ia new building or by making s i'ich'aii aperturein an old building; that the :SEST AVAHABLE Q i apparatus when installedis not ap'ermanent fixture but may be removed and set upf'in another building at the will of the user: and also that the construction is relatively simple and may be easilyinstalledand as readily re moved by unskilled labor.

It will also be understood thatwhile the apparatus as shown and described is power driven the same may be driven inanuallyor in any other manner, and-furthermore, that the-apparatus is as much adapted for use in elevatorpractice as it is in that of dumbwaiter practice.

I claim as my invention:

* 1. 111 a diimbwaiter apparatus, an outer closed casing, an inner closed casing adapted to fit Wlthlll the outer casing and to'form therewith a' dumb-waiter enclosure, means,

for moving the inner casing outof the outer casing to a position for use, devices independent of the aforesaid means for supporting the inner casingwhen in its extendedposition for use, a car, means formoving thecar in v the inner and outer;casi ngs'when extended, guide ropes connected to said casings for di-' rccting thetravel of the car, said ropes being slack when the inner casin is within theouter casing and straightwhen the inner casing is I OVe'Cl out ofthe outer casing, all of saidparts forming 'a unitary assembly for installation inthe building as such.

' 2. Ina'dumbwaiter apparatus, an outer casing adapted tolextend'cbetween the floor and ceilingQ a-n inner casing adapted tofitwithin the outer casing and to be linoved therefrom throi'igh an opening in the ceiling and floor of the room above to extend into the room above, means for'moving the inner cas;

ing out o'f the outer casing'toits position for, use," devices independent of the aforesaid 'I'IIGELIIS for supporting 'the sinner casing when in its 'positionfor; use,

a 7 car movable from the inner. and outer casings when i'n its position for use, guide de vices connected to said casings for directing the travel of the car, said; devices being collapsed wh'en the inner casing is within the outer casing and extended when the inner casing is moved out ofthe outer casing, all of said parts forming a unitary assembly for installation in the building as such; I

3. In a 'dumbw'a iter apparatus, an outer casing adapted to extend between a'floor and" ceiling, an inner'casing adapted to fit within the outer casing, adrum mounted'in the outcreasing, sets ofcables passing around the" drum and wconnected .to the inner. casing whereby in the operation of the drum the in hereasing is moved from the outer casing through an opening inthe ceiling and floor of an upper room to a position inethe upper room, a car movable through the nner and outer casings when extended, means for actu-c ating the car, guide ropes connected to said casings for directingthetravel ofthe car,

, dESi'AVAiL Mjui: LL25 said guide ropes being slack when the inner casing is in position within the outer casing and drawn substantially straight when the inner casing is moved out of the outer casing, 1

all of said parts forming a unitary assembly for installation in the building as such.

4:. In a dumbwaiter apparatus, an outer whereby in the-operation of the drum the l inner casing is moved from the outer casing r a counter weight, a cable connected at one and through an opening in the ceiling and floor of an upper room to position in the upper room, a car movable through the said inner and outer casings when extended,a pulley,

end to the car, passing over the pulley and connected at the other end to the counter weight, means for operating the pulley to raise and lower the car, guide ropes connected to said casings for directing the travel of the car, said guide ropes being slack when the inner casing is in the outer casing and which are drawn substantially straight when the inner casing is moved out of the outer casing, all of said parts forming a unitary assembly for installation in the building as such.

5. In a dumb-water apparatus, an outer casing adapted to extend between the floor and ceiling, an inner casing adapted to fit within the outer casing and to be moved therefrom through an opening in the ceiling and floor of the room above, to extend into the room above, means for moving the inner casing out of the outer casing to its position for use, devices independent of the aforesaid means for supporting the inner casing when in its position for use, a car movable from the inner and outer casings when in its position for use, guide devices connected to said cas' ings for directing the travel of the car, said device being collapsed when the inner casing is within the outer casing and extended when the inner casing is moved out of the outer casing, all of said parts forming a unitary assembly for installation in a building as such and means for tensioning said guide devices.

Signed by me this 7th day of March, 1928.1

JEROME HIRSHFELD. 

